Apparatus for the production of air-gas.



\ w. THIEM.

APPARATUS FOR THE PRODUCTION OI AIR GAS.

\ APPLIOATION FILED APR. 28, 1911.

1 063,081, A Patented May 27, 1913.

UNITED STATES PATENT OFFICE.

. TWALIER THIEM OF HALLE-ON-THE-SAALE, GERMANY, ASSIGNOR T0 SVEND OLSEN.

0F sIALLE-ON-THELSAALE, GERMANY.

Specification of Letters Patent.

Patented May 27, 1913.

Application filed April 28, 1911. Serial No. 523,957.

' tions in working.

To obtain a gas of uniform character, it is essential that the supply of hydrocarbon be'reg'ular. F or this purpose some form of scooping-apparatus is usually employed,

as other devices, such as small pumps, valves,

and the like, are not reliable. Rotary scooping-cont-rivances, having a number of buckets, aremost generally used, but possess numerous disadvantages. Not only is it difficult to obtain buckets of the same ca pacity, but on the plant-being stopped, the filled buckets remain standing in .the airchamber of the scooping-apparatus, so that should the stoppage be of considerable duration, the contents evaporate. Thus when the plant is started again, there will be a corresponding deficiency ofhydrocarbon, and the gas will be oor. Rotary scoopingcontrivances also. ave the disadvantage 'that the space at, disposal for the drivinggear of the same is limited. Oscillatory scooping-devices are free from this drawback," the length of the crankarm not being restricted. Since, however,the capacity of the chamber with which the oscillating bucket communicates, affects the quantity of liquid to be lifted, such a device can only be employed to advantage when the liquid being raised is always maintained at the same level by means of a second bucket. To obviate these defects and obtain a gas of thoroughly uniform composition, I use a scooping-device having only one bucket, and of such construction that the quantity of liquid raised is unaffected by the change of level in the reservoir, or by other circumstances.

.by means of a rope-drum 5.

One embodiment of my invention is illustrated in the accon'lpanying drawing.

Figure 1 shows the apparatus in side elevation and part section; Fig. 2 isa front elevation and part section; Fig' 3 is a top plan view; Fig. 4 shows on an enlarged scale, details of the bucket, mechanism to be hereinafter referred to, and Fig. 5 is a s milar View to Fig. lwith the bucket in a different posit-ion. Fig. 6 a detail perspective view of the oscillatory scooping device.

The apparatus consists of a tank 1., inside which there is mounted in familiar manner a rotary blower 2, which acts as a ventilator and resembles the drum of a gasmeteri,

This blower 2 is revolved by means of gear wheels 3, 4, the latter one of which is driven The gas holder 7 is carried by a hood 6, which covers the blower 2. When the latter is set in mo- ,tion, it draws in air, which enters at the inlet 9 and passes through the sinuous, flat, sheet-metal duct 8, while simultaneously herewith a scooping-device 10' journaled on shaft 10 conveys the hydrocarbon into the latteza, The gas thus resulting flows through the pipe 11 into the space 6 below the hood 6 and thence throu h the bell 13 and'to the outlet 12 which lea s'to the place of consumption.

At the top of the casing of the gas-holder 7, there is fulcrumed a pivotal lever let, the inner end of which rests upon the bell 13 of the gas-holder, in such manner that as soon as the bell. 13 is full, the lever 14 actuates a lever system 15, 15, the straight bar 15* of which is pivoted at l5 and carries a brake shoe 16, whereby the latter is forced against a brake-disk l7, arresting it and hence also the driving-gear. When the gas-holder descends, owing to the consumption of gas,

the brake is released automatically and the apparatus will. supply more gas. The scooping-device 10, which receives its mo tion' through a rod l8 and eccentric 18, is

also controlled by the lever 15, 15. The

rod 18 is connected with an arm 30 of a crank shaft 31 on which is secured another arm 30 at approximately 90 to the former arm 30 V; and by means of a link 32 the crank shaft arm 30" is connected with an arm 10, rigidly secured to the upper portion 10 of the bucket-device. I

The uniform character ofuhe gas is in sured by the constant volume of air which is drawn in at each revolution of the blower 2, and by-t-he hydromrbon being fed to it by the scooping-device in nu .sured quan- 5 'tities.

completely vaporized in the duct 8 by the air, independent-of the zotation and other influences.

The oscillatory scooping-device i0 is pro- 10 vided with a bucket 19, which always lifts the same quantity of hydrocarbon from the reservoir 20, anddelivers it to a funnel 21,

and thence to the carbureting-duct' 8. The

bucket 19 is furnished with a cover 22, having an opening 23 (Fig. 4), and a tube 24:

conductstthe contents of the bucket to the funnel, when the bucket 19 is in-its elevated position. The bucket 19 is also provided with a compensation-pipe 25, whose .oiiice it is to equalize the quantity of hydrocarbon raised into the pipe 24, and which depends upon the level of the hydrocarbon. .Thus,

for example, when the bucket 19 is in its bottom position, as shown in Fig. 5, taking 25 the hydrocarbon. at the lowest occurring level, the pipe A is filled to the level a, while the con'ipensation-pipe is quite full.

- The height of the filling is naturally determined by the aperture 23. If, on the othcr hand, the bucket 19 is lifting hydrocarbon from the highest occurring level .(Fig. 4'), the compensation pipe is only filled up to the level .2, whereas the pipe :Zlis filled up to the level y. In each case, the

volume lifted is equal to the contents of the bucket proper plus the portions which are shown shaded in the figures. But if the relations are so maintained the spaces occupied by the liquid in the pipes 2i and are equal, it is obvious that the bucket will raise the same volume at each level; the pipe 24 lifting as much less, as the compensation-pipe 25 lifts more, and vice versa. This device would, however, be liable to work irregularly through the motion of the bucket, since (supposing the compensationpipe 25 to be open in front) pressure would u; exercised, so that more liquid would be raised by the bucket if it were moved rap- .50 idly through the liquid, than were it to leave the hydrocarbon quite slowly. It is consequently necessary that the compensation- In this manner the h drocarbon is' pipe 25 be provided with a cover 26, having a lateral orifice 27. Furthermore, the pipe 24.- must also be provided with a slit 28, extending to the point'29. For if the bucket 19, when the liquid is at the highest level, dips to the bottom of the reservoir, the pi e 24 is filled to the level 31. When-now t e pipe 24 leaves the liquid, the entire contents between the levels 1 and :0 would have to flow out through the apertures 23. If the motion of the bucket be rapid, however, there would not he sufiicient time for the entire quantity to flow out, and the bucket would consequently scoop up more liquid than were it to move slowly. It, now, a slit 28 is provided(which, however, must not be such as to prevent certain flow of the liquid through the pipe 24) the hydrocarbon will have time to leave through such aperture.

I 0%d-iln; l. n apparatus for manufacturing airgas, an oscillatory scooping-device having a tubular limb carrying a bucket, and a compensation-pipe extending from the latter at an angle to the limb and adapted to receive such quantities of hydrocarbon as equalize the quantity lifted by the tubular limb at different liquid levels, substantially as described.

'2. In. apparatus for manufacturing airgas, an oscillatory SCOOPiHg-ClGViCG having a tubular limb carrying a bucket, and a covered compensation-pipe, having a lateral orilice, extending from the bucket and adapted to receive such quantities of hydrocarbon as equalize the quantity lifted by the tubular limb at different levels, substantially as described.

3. In apparatus for manufacturing airgas, an oscillatory scooping-device having a tubular limb carrying a bucket, a slit in the wall of the tubular limb, constituting an outlet for the surplus hydrocarbon when the device is being eie'vati-zd, substantially as and for the purpose described.

In testimony whereof I aflix my signature in presence of two witnesses. V i

YVALTER "HIEM. -\Vitnesses Rononrn FRICKE,

TERA Grass. 

